D800 service center check for the focusing points

Started Jun 24, 2012 | Discussions thread
Fred Briggs
Fred Briggs Senior Member • Posts: 1,023
Re: Also exposure ...

ne beginner wrote:

When you focus you also lock the exposure on that target area as well. So the focus target may be at the correct range, but the real subject may need a different exposure.

And that is why I use AF-ON for focus, and disable focus on the shutter button.

This means you can set the focus on anything you want, then release the AF-ON button to prevent any further change - no need to set lens to MF as someone mentioned earlier.

Once you have recomposed, the initial half press of the shutter button then just sets the exposure appropriately for the final composition.

Fred

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